Subclade K has become the dominant form of flu and is slightly different from the virus targeted by this year’s flu vaccine.

Flu is rising rapidly across the U.S., driven by a new variant of the virus. The Centers for Disease Control and Prevention ...

As flu cases are surging across the United States, here's what to know about whether or not you can still get the vaccine.

Doctors and scientists say this year's influenza season could be tougher than usual, with a new version of the flu virus, ...

The new variant of Influenza A, or H3N2, has been given the nickname 'super flu.' The fast-spreading virus has caused ...

A new strain called H3N2 subclade K has emerged, raising concerns that the body may not be able to fight it off as well.

Health leaders are raising concerns about subclade K, a variant of influenza A that has mutated from the original H3N2 strain ...

Flu season is off to a rough start this year, according to new CDC data. The virus is spreading faster than in previous years ...

Flu season has hit early and hard in the East, with New York experiencing a record number of cases of the viral respiratory ...

As flu cases rise and the debate around vaccines intensifies, a Health and Human Services panel continues to meet to discuss ...

Whether it's the flu, RSV, or even COVID, holiday travel and drastic changes in the temperature are adding to the reasons ...

Although development of a jab for the H5N1 strain of avian flu is well under way, other strains are receiving less attention ...